"While the skies were clear the seeing conditions were quite poor due to high humidity," Hancock wrote SPACE.com in an email.

Approximately 6 light-years wide, NGC 7635 is located roughly 7,100 light-years from Earth in the constellation Cassiopeia. A light-year is the distance light travels in one year, or about 6 trillion miles (10 trillion kilometers). Intense radiation and stellar winds from a nearby star created this delicate-looking bubble, which shines pink because of surrounding red, hot gas.